Primitive arthropods, Biology

Assignment Help:

Primitive Arthropods

The primitive arthropods, Onychophora (for example Peripatus) have a series of paired legs which are not jointed but have a ringed appearance because of the presence of rows of papillae on them. Each leg consists of two parts, a conical proximal part along with their extrinsic muscles, and a small distal part comprising a pair of claws.

183_Primitive Arthropods.png

Figure: Peripatus lateral view of head

The limbs are protracted and retracted. Using these legs, and through extension and contraction of the body for working the legs they crawl. While a segment is extended, the legs are lifted and moved forward; subsequent effective stroke provides the animals a pushing force.


Related Discussions:- Primitive arthropods

Describe asd closure and vsd closure in heart dieases, Describe ASD closure...

Describe ASD closure and VSD closure in heart dieases? ASD Closures : Small ASD's can be closed directly. Others will need a pericardial patch. Piimum ASD and Sinus Venosus A

What is photoperiod, What is photoperiod? Photoperiod is the daily time...

What is photoperiod? Photoperiod is the daily time period of light exposure of a living being. The photoperiod might be vary according to the period of the year.

Where in the body is the thyroid gland located, Q. Where in the body is the...

Q. Where in the body is the thyroid gland located? The thyroid is located in the anterior cervical region (frontal neck) in just below the larynx and front of the trachea and i

Antonmy, bone modeling may occur?

bone modeling may occur?

What will happen to membranes, What might happen to membranes if many -OH g...

What might happen to membranes if many -OH groups were added to the tails of phospholipids?

Lungs, LUNG S (PULMONES) - Present in pleural cavity. Covere...

LUNG S (PULMONES) - Present in pleural cavity. Covered by double layered pleura. Outer parietal pleura and inner visceral pleura. Both are continuous, slip on

Canine distemper, Canine distemper Canine distemper, a highly contagio...

Canine distemper Canine distemper, a highly contagious disease of dogs, is caused primarily by air- borne virus which belongs to the genus Morbillivirus in family Paramyxoviri

Feeding on food masses, Normal 0 false false false EN-I...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

What does an osteoblast cell do, What does an osteoblast cell do? Livin...

What does an osteoblast cell do? Living cells within the bone are occupied in an unceasing process of remodeling. Osteoblasts lining the surface of bone are much like fibroblas

Questions, assignment having 12 questions

assignment having 12 questions

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd